The invention provides a fixing structure of a core, which belongs to the mould technology field. The utility model solves the problem that the existing core is fixed with low firmness. The fixed structure of this core is fixed on the movable mold. The installation structure includes a pair of pins. The die has an installation hole that runs through the two ends of the die. The inner wall of the installation hole has a circular step surface. The annular step surface divides the installation holes into two segments with different aperture. The core is embedded and tightly fitted to the hole of the installation hole. In the larger diameter section, the movable mold also has a positioning hole that runs through the two sides of the die. The positioning hole is connected with the larger aperture of the installation hole. The positioning hole in the installation hole is semi circular. The upper and lower sides of the core have a semi circular positioning slot. The pin is located in the corresponding positioning hole and some pin is located at the fixed position. In the slot, the core is connected with the moving die. The fixing structure of the core has the advantages of improving the firmness and firmness of the core.
【技术实现步骤摘要】
一种型芯的固定结构
本专利技术属于模具
,涉及一种型芯的固定结构。
技术介绍
压铸件在与压铸模具开合模方向不同的侧面上具有孔、凹穴或凸台时,需要设置型芯。型芯分为活动型芯和固定型芯。活动型芯需要在压铸件成型后移出,传统压铸每次开模后需手动拆除型芯,压铸下一个零件前还需再装上,费时费力,生产周期长,目前大多活动型采用抽芯机构移除。固定型芯,垂直于分型面固定于动模具或定模具上,不妨碍压铸件自型腔中取出,现有的固定型芯,一般均是通过固定型芯直接通过螺纹固连的方式与动模具或定模具相固连,但在压铸过程中型芯经受高温高压环境,易变形,导致型芯与动模具或定模具之间的螺纹出现松动的问题,连接牢固程度变低,从而使型芯偏移设定的位置,导致产品的加工质量变低。
技术实现思路
本专利技术的目的是针对现有技术中存在的上述问题,提出了一种型芯的固定结构,解决的技术问题是如何使型芯固定的牢固程度高,提高加工质量。本专利技术的目的可通过下列技术方案来实现:一种型芯的固定结构,所述型芯固定在动模具上,其特征在于,所述安装结构包括一对销钉,所述动模具中具有贯穿动模具两端的安装孔,所述安装孔的内侧壁 ...
【技术保护点】
一种型芯的固定结构,所述型芯(1)固定在动模具(2)上,其特征在于,所述安装结构包括一对销钉(3),所述动模具(2)中具有贯穿动模具(2)两端的安装孔(4),所述安装孔(4)的内侧壁上具有环形台阶面(5),所述环形台阶面(5)将安装孔(4)分为孔径不同的两段,所述型芯(1)嵌入且紧配合固定在安装孔(4)的孔径较大段,所述动模具(2)中还具有贯穿动模具(2)两侧面的定位孔(6),所述定位孔(6)与安装孔(4)的孔径较大段相连通,且位于所述安装孔(4)中的定位孔(6)呈半圆形,所述型芯(1)的上下两侧壁上均具有呈半圆形的定位槽(7),所述销钉(3)穿设在对应的定位孔(6)中且部 ...
【技术特征摘要】
1.一种型芯的固定结构,所述型芯(1)固定在动模具(2)上,其特征在于,所述安装结构包括一对销钉(3),所述动模具(2)中具有贯穿动模具(2)两端的安装孔(4),所述安装孔(4)的内侧壁上具有环形台阶面(5),所述环形台阶面(5)将安装孔(4)分为孔径不同的两段,所述型芯(1)嵌入且紧配合固定在安装孔(4)的孔径较大段,所述动模具(2)中还具有贯穿动模具(2)两侧面的定位孔(6),所述定位孔(6)与安装孔(4)的孔径较大段相连通,且位于所述安装孔(4)中的定位孔(6)呈半圆形,所述型芯(1)的上下两侧壁上均具有呈半圆形的定位槽(7),所述销钉(3)穿设在对应的定位孔(6)中且部分所述销钉(3...
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